Home / 19,971.82-29,976.12-10,117.96

Finding the Fourth Proportional to 19,971.82, 29,976.12 and 10,117.96

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Solution

The fourth proportional to 19,971.82, 29,976.12 and 10,117.96 is: 15,186.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.82 : 29,976.12 = 10,117.96 : x
  2. Step 2: Convert to fraction form
    19,971.82/29,976.12 = 10,117.96/x
  3. Step 3: Cross multiply
    19,971.82x = 29,976.12 × 10,117.96
  4. Step 4: Simplify right side
    19,971.82x = 303,297,183.12
  5. Step 5: Solve for x
    x = 303,297,183.12/19,971.82
  6. Step 6: Final answer
    x = 15,186.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.